| /* Copyright (C) 2005-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| |
| /* Read the contents of the symbolic link PATH relative to FD into no |
| more than LEN bytes of BUF. The contents are not null-terminated. |
| Returns the number of characters read, or -1 for errors. */ |
| ssize_t |
| readlinkat (fd, path, buf, len) |
| int fd; |
| const char *path; |
| char *buf; |
| size_t len; |
| { |
| if (path == NULL) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| |
| if (fd != AT_FDCWD && fd < 0 && *path != '/') |
| { |
| __set_errno (EBADF); |
| return -1; |
| } |
| |
| __set_errno (ENOSYS); |
| return -1; |
| } |
| stub_warning (readlinkat) |
| libc_hidden_def (readlinkat) |
